Clutch.



W. E. KN O ELL. CLUTCH.

APPLICATION FILED APR. 20, 1909.

Patented Jan. 4,1910.

v y l I. WITNESSES Q l/VI/E/VTOR Waller EKnoeZZ ATTOR/VE rs UNTTEDSTATES OFTCE.

WALTER E. KNOELL, or MiNNE'AroLIs, MINNESOTA.

CLUTCH.

To all whom it may concern:

Be it known that I, amra E. KNoELL, a citizen of the United States, anda resident of Minneapolis, in the county of Hennepin and State ofMinnesota, have invented a certain new and useful Clutch, of which thefollowing is a full, clear and exact description.

The objects which the present invention has in view are, to provide aclutch which of a shaft bearing, clutch and clutch wheel, constructed inaccordance with my invention,

and showing the parts in the disengaged position; Fig. 2 is a viewsimilar to Fig. 1, showing the parts as arranged in the engagedposition; Fig. 3 is a cross section of the shaft, wheel and clutchshaft, taken on the line 3--3 in Fig. 2; and Fig. 4: is a sectional viewof the shaft mounting and of the shaft taken on the line 1 in Fig. 1.

The structure consists of a main shaft bearing bracket 5, provided withsuitable bearing in the ends thereof at 66, one side of each of thebearings being formed by caps 7 and 8. These bearin s may be made in anyof the approved sty es, either anti-frie tion, hard metal or babbittedbearings. Between the bearings there is provided a chamber 9, withinwhich is slidably mounted a sleeve 10, which forms a mounting for apulley 11.

The sleeve 10 is provided with recesses 1212 and end cylindricalportions 13 and 14:. The cylindrical portion 13 is of a lengthsuflicient to carry and form a smooth running mounting for the pulley11. The portion 1 1 is provided with an annular groove 15 which receivesthe free end 16 of a bellcrank.

The bell-crank 17 is pivotally mounted in the bracket 5at 18, and has anelongated extension 19 by which the said bell-crank is manuallyoperated. The extension 19 is connected with the bracket 5 by a coiledspring 20, so adjusted as to draw the extension 19 to throw the free end16 of the bell- Specification of Letters Patent.

Application filed April 20, 1909.

Patented Jan. 4, 1910.

Serial No. 490,997.

crank 17 to the position shown in Fig. 1 of the drawings. The pulley 11is provided with a perforation 21, the upper end of which isscrew-threaded to receive in threaded engagement a screw 22, the saidperforation 21 extending through the pulley in line with the center ofthe main driving shaft 23. A piston 24 fits snugly within theperforation 21 and is provided with a spiral spring 25 to force the saidpin 2% against the surface of the sleeve 10.

WVith a device constructed as above de scribed,the operation is asfollows: To engage the pulley 11, the bell-crank lever 17 is thrown tothe position shown in Fig. 2 of the drawings. In this position thegrooves 12 have been thrown forward until the same are in the track ofthe pin 2 1, and the pin 24 is forced into the grooves 12 by the spiralspring 25, when one of said grooves takes a position under the said pin.The free end 16 of the lever 17 has been drawn forward so that the hookv26, with which the said end is provided, engages the head 27 of aspring latch 28. The sleeve 10 is held by the head 27 against a returnto its normal position, that shown in Fig. 1 of the drawings, and towhich the spring 20 immediately returns the said sleeve when the hook 26is disengaged from the head 27. To effect this disengagement, there isprovided an extension arm 29 upon which is provided a rounded head 30which is so disposed that it extends into the track of a feather 31 onwhich the sleeve 10 slides. Each revolution of the shaft 23 presents theedge of the feather 31 to the head 30 of the spring latch 28. In passingunder the head 30 the latch 28 is raised to release the hook 26, andthereby allows the spring 20 to throw the bell-crank to the positionshown in Fig. 1 of the drawings.

The present invention is particularly adapted for use in the class ofmachines wherein a single rotation of the driving pulley is desired, andwherein the timing of such rotation is manually controlled.

The mechanism described is very compact, simple and easily cared for,and the parts are quickly and readily replaced.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A clutch, comprising a wheel having a detent mounted therein, a.sleeve on which said wheel is loosely mounted, said sleeve being"adapted to be shifted on the driving shaft, shoulders formed on the saidsleeve to engage the said detent, and a suitable mechanism for shiftingthe said sleeve on the driving shaft.

' 2. A clutch, comprising an elongated sleeve mounted on a driving shaftto slide longitudinally thereon, said sleeve having a section forming acontinuous bearing for a wheel and a section having recesses, a wheelhaving an engaging member mounted therein adapted to engage saidrecesses when moved into line therewith, and suitable mechanism forshifting the said sleeve to present alternately the smooth section andthe recessed section to the said wheel.

3. A clutch comprising an elongated sleeve mounted on a driving shaft toslide longitudinally thereon, said sleeve having a section forming acontinuous bearing for a wheel and a section having recesses, a wheelhaving an engaging member mounted therein adapted to engage saidrecesses when moved into line therewith, means for forcing the saidengaging members to engage the said recesses, and suitable mechanism forshifting the said sleeve to present alternately the smooth section andthe recessed section to the said wheel.

4. A clutch, comprising an elongated sleeve mounted on a driving shaftto slide longitudinally thereon, said sleeve having a section forming acontinuous bearing for a wheel and a section having recesses, a wheelhaving an engaging member mounted therein adapted to engage saidrecesses when moved into line therewith, a spring-actuated detent tohold the sleeve in engaged position, and suitable mechanism for shiftingthe said sleeve to said engaged position.

5. A clutch, comprising an elongated I sleeve mounted on a driving shaftto slide longitudinally thereon, said sleeve having a section forming acontinuous bearing for a wheel and a section having recesses, a wheelhaving an engaging member mounted therein adapted to engage saidrecesses when moved into line therewith, a spring-actuated a deviceactuated by the driving shaft to release the said detent to permit thesleeve to return to the disengaged position, and suitable mechanism forshifting the said sleeve to present alternately the smooth section andthe recessed section to the said wheel.

6. A clutch, comprising an elongated sleeve mounted on a driving shaftto slide longitudinally thereon, said sleeve having a section forming acontinuous bearing for a wheel and a section having recesses, a wheelhaving an engaging member mounted therein adapted. to engage saidrecesses when moved into line therewith, a spring-actuated detent tohold the sleeve in engaged position, a device actuated by the drivingshaft to release the said detent to permit the sleeve to return to thedisengaged position, and suitable mechanism for shifting the said tionand the recessed section to the said wheel, said mechanism embodying aspring to shift the sleeve to the disengaged position.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses.

I XVALTER E. KNOELL.

lVitnesses C. M. SPILMAN, I. B. FESSENDEN.

detent to hold the sleeve in engaged position,

sleeve to present alternately the smooth sec-

